JP2021146522A - Woodgrain tone decorative material and building material - Google Patents

Abstract

To provide a woodgrain tone decorative material having an appearance and a tactile feeling closer to a natural wood plate, in a decorative material having a woodgrain pattern including a vessel groove part, and a building material obtained by adhering the woodgrain tone decorative material onto an adherent.SOLUTION: A woodgrain tone decorative material 10 includes a base material 1, a design pattern layer 3 and a vessel-like ridge part 2. The woodgrain tone decorative material includes the vessel-like ridge part at least partially on a surface thereof. The design pattern layer has a woodgrain pattern including the vessel groove part. The vessel-like ridge part corresponds to the vessel groove part of the woodgrain pattern.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wood grain decorative material and a building covering material.

Conventionally, a decorative material is laminated on an adherend on the surface of various articles in order to impart designability. For example, a sheet-shaped decorative material is laminated on an adherend on the surface of a wall covering material used for a wall surface of a building, a floor decorative material used for a floor surface, furniture, or the like.
As a design given to such a decorative material, a wood grain pattern imitating natural wood is often used. In the wood grain pattern of the decorative material, it is generally said that the closer it is to a natural wood board, the more preferable it is in terms of appearance (appearance) and tactile sensation (touch). Therefore, in the decorative material having a wood grain pattern, various measures have been taken so that the pattern pattern and the uneven shape of the decorative material have the appearance and the tactile sensation as close as possible to the natural wood board.

Since annual rings and conduit grooves in natural wood boards are unique to wood, it is important to faithfully reproduce them in decorative materials with wood grain patterns in order to obtain decorative materials that are closer to natural wood boards. It is believed that. For example, the conduit groove that is a recess in a natural wood board is devised so that it is formed as a recess even in a decorative material having a wood grain pattern (for example, Patent Document 1).
In Patent Document 1, the wood grain pattern is gravure-printed, and the resin layer for forming the second surface protective layer is gravure-printed so as to be position-synchronized with the portion other than the conduit groove, thereby forming the conduit groove portion of the wood grain pattern. It forms a relative recess. This form faithfully mimics a real natural wood board to some extent, resulting in a relatively good appearance and texture, or tactile sensation.

Japanese Unexamined Patent Publication No. 2008-087269

However, due to the recent increase in the required performance for the design of decorative materials, the following points, which were not so much a problem before, have come to be a problem in the wood grain pattern having a conduit groove.
First, there is a weak point of unevenness. Regarding the uneven tactile sensation caused by the concave shape of the conduit groove, there is a problem that the uneven tactile sensation in the decorative material having a wood grain pattern is felt lower (weaker) than the uneven tactile sensation of a natural wood board.

Next, there is a point that the sharpness of the conduit groove portion is inferior in appearance (appearance). In the appearance of the conduit groove portion, in the decorative material having a wood grain pattern, as compared with the sharpness of the natural wood board, the portion due to the reflection in the gently sloping portion in the contour portion of the recess formed in the conduit groove portion. There is a problem that the appearance of the conduit groove portion becomes blurry and lacks sharpness due to the appearance of whitish.
Furthermore, there is a point that it is inferior in easy sweepability. Since the narrow conduit groove portion of the natural wood board is reproduced as a narrow recess even in the decorative material having a wood grain pattern, there is a problem that it is difficult to remove the dirt that has entered the recess. .. This problem is considered to be a problem that can occur even in natural wood boards, but as long as it is a decorative material, it is preferable that it is easy to clean.

In view of the above, an object of the present invention is to use a wood grain decorative material having a wood grain pattern including a conduit groove portion, a wood grain decorative material having an appearance and feel closer to that of a natural wood board, and the wood grain decorative material as an adherend. It is to provide building materials that are pasted together.

The present invention is a wood grain decorative material having a base material, a pattern layer, and a conduit-like convex portion, and the wood grain decorative material includes a conduit-like convex portion at least a part on the surface thereof, and the pattern pattern layer. Has a wood grain pattern including a conduit groove portion, and the conduit-like ridge portion is a wood grain decorative material corresponding to the conduit groove portion of the wood grain pattern.

In the above-mentioned wood grain decorative material, if the width of the conduit-like ridge in the cross-sectional view perpendicular to the extending direction of the conduit-like ridge is W, W may decrease monotonically as the distance from the base material increases. ..

In the wood grain decorative material, the height H of the conduit-like ridge portion may be 10 μm ≦ H ≦ 50 μm.

In the wood grain decorative material, the surface of the conduit-like ridges may be rougher than the surface of the portion of the surface of the wood grain decorative material where the conduit ridges do not exist.

In the above-mentioned wood grain decorative material, the surface of the portion of the surface of the wood grain decorative material in which the conduit-like ridges do not exist may be rougher than the surface of the conduit-like ridges.

In the wood grain decorative material, the conduit-like ridge portion does not have to be in sync with the wood grain pattern conduit groove portion.

In the wood grain decorative material, the conduit-like ridge portion may be pattern-synchronized with the conduit groove portion of the wood grain pattern.

In the wood grain decorative material, the conduit-like ridge portion may be embossed.

The present invention is a building material obtained by attaching the above-mentioned wood grain decorative material to an adherend.

According to the present invention, in a decorative material having a wood grain pattern including a conduit groove portion, a wood grain decorative material having an appearance and a feel closer to that of a natural wood board, and the wood grain decorative material are attached to an adherend. Can provide building materials.

Cross-sectional perspective view showing the outline of the wood grain decorative material according to the embodiment of the present invention. Regarding the wood grain decorative material according to the present invention, FIG. 2 (a) is a schematic cross-sectional view for explaining the width and height of the conduit-like ridge portion, and FIG. Schematic cross-sectional view illustrating an example of the layer structure of the wood grain decorative material according to the present invention. Schematic cross-sectional view illustrating a method for producing a wood grain decorative material according to an embodiment of the present invention. Cross-sectional perspective view showing the outline of the building material according to the present invention.

[Wood grain decorative material]
Hereinafter, the wood grain decorative material according to the present invention will be described with reference to each figure. It should be noted that each figure shown below is a diagram schematically shown, and the size, shape, thickness, gap, decoration, etc. of each part are appropriately exaggerated or simplified for easy understanding. In addition, configurations that are not directly related to the explanation are omitted as appropriate. In each of the following figures, the same parts are designated by the same reference numerals, and some detailed description may be omitted.

Further, in the following description, specific numerical values, shapes, materials and the like will be described, but these can be changed as appropriate.
In this specification, terms such as board, sheet, and film are used, but as a general usage, these are used in the order of thickness, board, sheet, and film. It is used in the book as well. However, since there is no technical meaning in such proper use, the essence of the present invention and the interpretation of the claims remain unchanged even if these words are replaced as appropriate.

Further, as described above, the wood grain decorative material according to the present invention is used on the wall surface of a building, the floor surface, the surface of furniture, etc., and exhibits a design property. Therefore, the observation surface of the wood grain decorative material according to the present invention is usually only one surface. In the wood grain decorative material according to the present invention, of the front and back surfaces, the normal observation surface side is referred to as the front surface, and the opposite surface side is referred to as the back surface. Further, in each drawing including the cross section in the drawing, the front surface side is shown as the upper side and the back surface side is shown as the lower side.

(Embodiment)
FIG. 1 shows a cross-sectional perspective view showing an outline of the wood grain decorative material 10 according to the embodiment of the present invention.
The wood grain decorative material 10 according to the embodiment has a base material 1, a pattern layer 3, and a conduit-like ridge portion 2 on at least a part of the surface of the wood grain decorative material 10. The pattern layer 3 has a wood grain pattern including a conduit groove portion, and the conduit-like ridge portion 2 corresponds to the conduit groove portion of the wood grain pattern.
The wood grain decorative material 10 may contain any layer other than the above. The wood grain decorative material 10 according to the embodiment shown in FIG. 1 further includes a transparent resin layer 4, and in the embodiment shown in FIG. 1, the base material 1, the pattern layer 3, and the transparent resin layer 4 are in this order from the bottom. It is laminated. In the embodiment shown in FIG. 1, the surface of the transparent resin layer 4, which is the outermost layer, is deformed into an uneven shape so as to have an uneven shape for being visually and tactilely perceived as a conduit groove pattern. .. The convex portion of the uneven shape corresponds to the conduit-shaped convex portion 2, and the non-convex portion (relative concave portion) is the portion 2s of the surface of the wood grain decorative material in which the conduit-shaped convex portion does not exist. Corresponds to.

In the embodiment shown in FIG. 1, the conduit-shaped ridge portion 2 is deformed and formed by the transparent resin layer 4, but the present invention is not limited to this. As will be described later in the modified form (FIG. 3), the wood grain decorative material 10 according to the present invention can have various layered forms, and in each form, the conduit-shaped ridge portion 2 is also a wood grain decorative material. It is an uneven shape that is visually and tactilely perceived as a conduit groove pattern on the surface of 10. Therefore, when the base material 1 is the outermost layer, the surface of the base material 1 is deformed into a concavo-convex shape to form the conduit-like ridges 2 (FIGS. 3 (d) and 3 (FIG. 3). e)). The same applies to the case where the other layers are the outermost layers.
When the outermost surface layer is a thin layer such as the pattern pattern layer 3 or the surface protection layer, the surface of only the thin layer (the pattern pattern layer 3 or the surface protection layer) is made uneven. It cannot be deformed into a conduit-like ridge portion 2. In such a case, the surface of the lower layer of the thin layer (base material 1 in FIG. 3D) is deformed and formed into an uneven shape, and the thin layer above the thin layer is formed. By following the uneven shape of the lower layer (base material 1), the lower layer (base material 1) and the thin layer are integrally formed to form a conduit-like ridge portion 2 (FIG. 3 (d)). )).

Here, the conduit groove is observed when the conduit, which is a passage of water in the xylem of a plant, is cut in the longitudinal direction, and the conduit is dented in the longitudinal direction on the cut surface. It is a hollow.
Further, the fact that the conduit-shaped ridge portion 2 corresponds to the conduit groove portion having a wood grain pattern means that the observer of the wood grain decorative material 10 according to the present invention visually and tactilely displays the conduit-shaped ridge portion 2. It is to perceive it as a conduit groove in a wood grain pattern. In this case, it is considered that the observer of the wood grain decorative material 10 having the wood grain pattern including the conduit groove portion is very unlikely to feel a sense of discomfort as compared with the natural wood board. As will be described in detail later, the present invention is not limited to the case where the conduit-like ridge portion 2 is aligned with the wood-grained conduit groove portion in a plan view.
As described above, such a wood grain decorative material 10 can be a wood grain decorative material having an appearance and a tactile sensation closer to that of a natural wood board.

<Base material>
The material of the base material 1 is not particularly limited, and a fibrous sheet, a plastic base material, a metal base material, a wood-based base material, or the like can be used.
As the fibrous sheet, known fibrous sheets such as thin paper, inter-paper reinforced paper, impregnated paper, titanium paper, coated paper, cardboard paper, linter paper, kraft paper, and high-quality paper can be used. Specifically, general paper for wallpaper (pulp-based sheet size-treated with a known sizing agent); flame-retardant paper (pulp-based sheet treated with flame-retardant agents such as guanidine sulfamate and guadinin phosphate). ); Inorganic paper containing inorganic additives such as aluminum hydroxide and magnesium hydroxide; High-quality paper; Thin paper; Fiber-blended paper (paper made by mixing pulp and synthetic fiber) and the like. The fibrous sheet also includes those that are classified as non-woven fabrics.

As the plastic base material, various plastic sheets, films and the like such as polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, acrylonitrile butadiene styrene, and polyvinyl chloride can be used. The plastic substrate may or may not be colored. As the metal base material, a steel plate, aluminum, stainless steel, or the like on which a colorant is undercoated can be commercialized as a base material. Examples of the wood-based base material include plywood, particle board, medium density fiber board and the like.
Although the basis weight of the substrate 1 is not critical, preferably about 20 to 300 g / m ^2, more preferably about 50 to 300 g / m ^2, about 50~130g / m ² is more preferable.

<Pattern pattern layer>
The pattern layer 3, together with the conduit-like ridges 2, imparts design to the wood grain decorative material 10. The pattern pattern related to the pattern pattern layer 3 in the wood grain decorative material 10 of the present invention has a wood grain pattern including a conduit groove portion. The wood grain pattern is not particularly limited as long as it includes the conduit groove portion, and may be selected according to demand and the like. In the present invention, each effect is achieved by including the conduit groove portion in the wood grain pattern.

The pattern pattern layer 3 can be formed, for example, by printing a pattern. Examples of the printing method include gravure printing, flexographic printing, silk screen printing, and offset printing. As the printing ink, a printing ink containing a colorant, a binder resin, and a solvent can be used. These inks may be known or commercially available.

The colorant is not particularly limited, and known inorganic pigments or organic pigments can be used. Examples of inorganic pigments include titanium oxide, zinc white, carbon black, black iron oxide, yellow iron oxide, chrome yellow, molybdate orange, cadmium yellow, nickel titanium yellow, chromium titanium yellow, iron oxide (valve handle), and cadmium. Examples thereof include red, ultramarine blue, dark blue, cobalt blue, chromium oxide, cobalt green, aluminum powder, bronze powder, mica titanium, zinc sulfide and the like. Examples of organic pigments include aniline black, perylene black, azo (azo lake, insoluble azo, condensed azo), polycyclic (isoindoline, isoindoline, quinophthalone, perinone, flavantron, anthrapyrimidine, anthraquinone, etc.). Quinacridone, perylene, diketopyrrolopyrrole, dibrom anthraquinone, dioxazine, thioindigo, phthalocyanine, indantron, halogenated phthalocyanine) and the like can be mentioned. The content of the pigment is preferably about 10 to 100 parts by mass, more preferably about 15 to 50 parts by mass with respect to 100 parts by mass of the resin component.

The binder resin can be set according to the type of the base material 1. For example, acrylic resin, styrene resin, polyester resin, urethane resin, chlorinated polyolefin resin, vinyl chloride-vinyl acetate copolymer resin, polyvinyl butyral resin, alkyd resin, petroleum resin, ketone resin, epoxy. Examples thereof include based resins, melamine based resins, fluororesins, silicone resins, fibrous derivatives, rubber resins and the like.

Examples of the solvent (or dispersion medium) include petroleum-based organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, and methylcyclohexane; ethyl acetate, butyl acetate, -2-methoxyethyl acetate, and -2 acetate. -Ether-based organic solvents such as ethoxyethyl; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol and propylene glycol; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone Examples thereof include ether-based organic solvents such as diethyl ether, dioxane, and tetrahydrofuran, and chlorine-based organic solvents such as dichloromethane, carbon tetrachloride, trichloroethylene, and tetrachloroethylene; water and the like. These solvents (or dispersion media) can be used alone or in the form of a mixture.
The thickness of the pattern pattern layer 3 varies depending on the type of pattern pattern, but is generally preferably about 0.1 to 20 μm.

<Transparent resin layer>
In the wood grain decorative material 10 according to the embodiment, the transparent resin layer 4 is formed on the upper surface side of the pattern layer 3. The transparent resin layer 4 forms a conduit-like ridge portion 2 by being appropriately formed or deformed. In the present invention, the transparent resin layer 4 is not an essential component and does not have to exist. In the absence of the transparent resin layer 4, the conduit-like ridges 2 are formed by the deformation of the base material 1.

The transparent resin layer 4 is not particularly limited as long as it is transparent, and includes any of colorless transparent, colored transparent, translucent and the like. Examples of the resin constituting the transparent resin layer 4 include phenol resin, urea resin, diallyl phthalate, melamine resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, and melamine-urea cocondensate. , Silicon resin, polysiloxane, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene, polypropylene, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic acid ester copolymer, ionomer, polymethylpentene , Acrylic acid ester, methacrylic acid ester, polycarbonate, cellulose triacetate and the like. Further, an ionizing radiation curable resin may be used. These resins can be used alone or in combination of two or more.

Fine particles such as silica, alumina, and kaolin, and beads such as urethane beads and acrylic beads may be added to the transparent resin layer 4 in order to adjust the surface roughness thereof.
The transparent resin layer 4 may be colored as long as it has transparency, but it is particularly desirable not to add a colorant.
The thickness of the transparent resin layer 4 in the portion 2s of the surface of the wood grain decorative material 10 in which the conduit-like convex portion does not exist is usually about 5 to 30 μm, but it depends on the use of the wood grain decorative material 10 and the like. The above range may be exceeded.

<Conduit-shaped ridge>
As described above, the conduit-like ridge portion 2 is typically formed by deforming the surface of the transparent resin layer 4, the base material 1, or another layer into a convex shape, thereby forming the surface of the wood grain decorative material 10. It is a part that becomes a relative convex part in. The portion of the surface of the wood grain decorative material 10 that is not the conduit-shaped ridge portion 2 is referred to as a portion 2s in which the conduit-shaped ridge portion does not exist. The conduit-shaped ridge portion 2 is preferably a ridge portion on the surface of the wood grain decorative material 10 formed by machining such as embossing. The conduit-like ridges 2 are preferably embossed and play an important role in human perception of the conduit groove, both in terms of touch and appearance.

The conduit-shaped ridge portion 2 is formed so that W decreases monotonically as the distance from the base material 1 increases, where W is the width of the conduit-shaped ridge portion 2 in a cross-sectional view perpendicular to the extending direction.
FIG. 2A is a schematic cross-sectional view of the conduit-shaped ridge portion 2 cut along a plane perpendicular to the extending direction thereof. In FIG. 2A, the width W of the conduit-shaped convex portion 2 in the cross-sectional view perpendicular to the extending direction of the conduit-shaped convex portion 2 increases as the distance from the base material 1 increases, that is, h in the figure increases (FIG. 2). It moves upward in) and decreases monotonically. As shown in FIG. 2B, the monotonous decrease means a relationship in which W always decreases as h increases.

The height H of the conduit-shaped ridge portion 2 is preferably in the range of 10 μm ≦ H ≦ 50 μm. Here, the height H of the conduit-shaped ridge portion 2 is defined as the height H of the conduit-shaped ridge portion 2 from the portion 2s in which the conduit-shaped ridge portion does not exist in the cross-sectional view perpendicular to the extending direction of the conduit-shaped ridge portion 2. It is the height to the tip in the cross section, and is the height shown by H in FIG. 2 (a). The conduit-shaped ridge portion 2 according to the wood grain decorative material 10 of the present invention is easily formed by machining such as embossing, instead of laminating new layers as in the case of heap printing. It can be 10 μm ≦ H ≦ 50 μm.

As described above, the conduit-shaped ridge portion 2 is formed so that the width W decreases monotonically as the distance from the base material 1 increases, and the height H preferably ranges from 10 μm ≦ H ≦ 50 μm. .. The conduit-shaped ridge portion 2 having such a shape and dimensions can be easily formed by machining, preferably embossing. Further, since the wood grain decorative material 10 of the present invention has a conduit-like ridge portion 2 having such a shape and dimensions, the wood grain decorative material 10 has a conduit groove portion as a relative concave portion as compared with a conventional decorative material. The appearance and feel can be made closer to that of a natural wood board, and a decorative material with less discomfort can be obtained.

The shape of such a conduit-like ridge portion 2 is a shape in which the concave shape of the conduit groove in natural wood is inverted, but the dimensions need to match the conduit groove in natural wood. No. Rather, the dimensions should be aggressively adjusted to give the look and feel of a natural wood board. As described above, the width W of the conduit-shaped convex portion 2 decreases monotonically as the distance from the base material 1 increases (according to the height), and the extending direction of the conduit-shaped convex portion 2 becomes thinner toward both ends and is intermediate. Is designed as a thick shape. The actual size of the width W of the conduit-shaped convex portion 2 will be illustrated below, but here, the width W of the conduit-shaped convex portion 2 is defined as the intermediate portion and the extending direction of the conduit-shaped convex portion 2 in the extending direction. With respect to the height direction h in the cross-sectional view perpendicular to H, the width W at a height of 1/3 of H is the dimension of the portion shown by W in FIG. 2A. Such W is usually in the range of 70 μm ≦ W ≦ 400 μm, preferably in the range of 100 μm ≦ W ≦ 300 μm. The wood grain decorative material 10 on which the conduit-like ridges 2 having such H and W are formed can have an appearance and a tactile sensation closer to those of a natural wood board, and is a decorative material with less discomfort. Can be.

Incidentally, regarding the concave shape of the conduit groove in natural wood, the width Wn of the concave shape according to the same definition as above (inverted unevenness) is usually about 100 μm ≦ Wn ≦ 300 μm, and the depth Dn is 100 μm ≦ Dn ≦. It is about 300 μm.
Comparing the convex shape of the conduit-like ridge portion 2 of the wood grain decorative material 10 of the present invention with the concave shape of the conduit groove in natural wood, the widths (W, Wn) are similar to each other. The height (H) or depth (Dn) is 3 ≦ Dn / H ≦ 60, and roughly Dn / H is about 10, which is a difference of about 10 times between the two. Be done.

As for the widths (W, Wn) of both, it is considered that they mainly affect the appearance, and therefore it is considered preferable that the widths of both are approximately the same. On the other hand, there is a difference of about 10 times in the height (H) or depth (Dn) of the two, which is considered to mainly affect the tactile sensation, which is presumed as follows. Regarding the concave depth (Dn) of the conduit groove in natural wood, considering the ratio of the concave width (Wn) and the depth (Dn) and both dimensions, the skin reaches the bottom of the concave shape. This is considered difficult, and it is considered that the actual depth (Dn) is not sufficiently reflected in the tactile sensation. On the other hand, it is considered that the height (H) of the convex shape of the conduit-shaped convex portion 2 can be felt as the convex shape that the skin should overcome, and the difference in the tactile sensation between the two. However, it is presumed that the reason is that the ratio Dn / H of the height (H) and the depth (Dn) for obtaining a similar tactile sensation is different by about 10 times.

<Positional relationship between the pattern of the pattern layer and the conduit-like ridges in a plan view>
In natural wood boards, the conduit groove has a concave shape. Further, even in the conventional decorative material, the wood grain pattern conduit groove portion having the conduit groove is formed so as to be a relative recess. On the other hand, in the wood grain decorative material 10 of the present invention, as described above, the conduit groove portion is represented by the conduit-like ridge portion 2, that is, the convex shape, which is a big difference. Regarding the appearance and tactile sensation obtained by the concave shape of the natural wood board, the convex shape of the wood grain decorative material of the present invention makes it possible to obtain the appearance and tactile sensation closer to that of the natural wood board. The appearance and tactile sensation obtained by the wood grain decorative material of the present invention are closer to those of a natural wood board as compared with the conventional decorative material in which the conduit groove portion is formed as a relative recess.

In the wood grain decorative material 10 of the present invention, the conduit-like ridge portion 2 corresponds to the conduit groove portion of the wood grain pattern. That is, the observer of the wood grain decorative material 10 according to the present invention can visually and tactilely perceive the conduit-like ridge portion 2 as a conduit groove in the wood grain pattern. However, this does not necessarily mean that the portion of the pattern layer 3 that expresses the conduit groove portion (usually expressed as a relative dark portion) and the conduit-like convex portion 2 have a planar positional relationship between the two. In terms of vision, it does not mean that they exist (overlap) at the same position, that is, that the patterns are synchronized.

In the wood grain decorative material 10 of the present invention, the conduit-shaped ridge portion 2 includes a form in which the pattern is synchronized with the conduit groove portion of the wood grain pattern in the pattern layer 3, but the conduit-shaped ridge portion 2 has a pattern. The form in which the pattern is not synchronized with the conduit groove portion of the wood grain pattern in the pattern layer 3 is also included. As a typical example of pattern synchronization, in a plan view, the wood grain pattern conduit groove portion in the pattern pattern layer 3 and the conduit ridge portion 2 overlap at the same position, or the wood grain pattern conduit groove portion in the pattern pattern layer 3 And the relative recesses generated between the adjacent conduit-shaped ridges 2 are overlapped with each other.

By the way, since the step of forming the pattern layer 3 (typically a printing step) and the step of forming the conduit-like convex ridges 2 (typically an embossing process) are separate steps, the pattern layer 3 is formed. It is generally difficult to match the relative position, that is, the register, between the wood-grained conduit groove portion in No. 3 and the conduit-shaped ridge portion 2. In particular, when the base material 1 is made of a strip-shaped sheet of thermoplastic resin, the base material 1 is heated and softened in the embossing process for forming the conduit-shaped ridges 2, and the base material is tensioned in the longitudinal direction thereof. The conduit-like ridge portion 2 is shaped (embossed) while being transported over. Therefore, the base material 1 expands and contracts, and it is assumed that the conduit-like ridges 2 are designed so that the positional relationship with the conduit groove in the wood grain pattern is completely synchronized with the pattern on the printing plate and the embossed plate. However, due to the expansion and contraction of the base material, it tends to be difficult to synchronize the positions of the two.

Therefore, even if the positions of the wood grain-patterned conduit groove portion and the conduit-like ridge portion in a plan view are deviated to a extent that can be visually discriminated by careful observation, the observer can visually and tactilely both of them. As long as the misalignment in the plan view is not perceived with the accompanying unnaturalness or discomfort, it is assumed that there is no misregistration, that is, the pattern is synchronized. It is difficult to unequivocally quantify the degree of the observer's perception of misregistration because it largely depends on the type of wood grain pattern. It is assumed that the strip 2 corresponds to the conduit groove portion of the wood grain pattern.

As described above, in the wood grain decorative material 10 of the present invention, the conduit-like ridge portion 2 does not have to be in sync with the conduit groove portion of the wood grain pattern in the pattern layer 3. This is not limited to the case where the misregistration between the wood grain pattern conduit groove portion in the pattern layer 3 and the conduit-like ridge portion 2 exceeds 3 mm. In an extreme and preferable example, the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern pattern layer 3 and the conduit groove pattern represented by the conduit-like ridge portion 2 may have different patterns. .. However, if the two conduit groove patterns are significantly different, the appearance and the tactile sensation become uncomfortable. Therefore, it is preferable that the two conduit groove patterns are close to each other to some extent.

Specifically, regarding the difference between the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern layer 3 and the conduit groove pattern represented by the conduit-like ridge portion 2, the extending direction of the conduit groove pattern. It is preferable that the difference between the two is within ± 20 ° and the difference in the conduit density is 50% or more and 200% or less of the other. When both are satisfied, the observer of the wood grain decorative material 10 according to the present invention can visually and tactilely perceive the conduit-shaped convex portion 2 as a conduit groove without discomfort, and the conduit-shaped convex portion 2 can be perceived as a conduit groove. Can correspond to the wood grain pattern conduit groove portion.
Here, the conduit density can be the number of conduit groove stalks crossed by a line segment having a unit length in a direction orthogonal to the extending direction of the conduit groove stalk in the extending plane of the wood grain decorative material 10. In the present invention, since only the ratio of the conduit densities to each other is a problem, the unit length may be replaced with a predetermined length. In order to reduce the influence of variation depending on the measurement position, it is preferable to make the predetermined length sufficiently long, or to adopt an average value measured at a plurality of points.

Further, for both the conduit-like ridge portion 2 and the wood-grain pattern conduit groove portion in the pattern layer 3, the plan view pattern is made to be the same whether it is a "grain" pattern or a "plate grain" pattern. Even when the misalignment of both the conduit groove portion of the wood grain pattern in the conduit ridge portion 2 and the pattern layer 3 exceeds 3 mm, it can be perceived with little discomfort in appearance and touch, and the conduit ridge portion 2 has a wood grain pattern. It can correspond to the conduit groove part.
That is, when the conduit-like ridge portion 2 has a "smooth grain" pattern. The conduit groove portion of the wood grain pattern in the pattern pattern layer 3 is also defined as a "smooth grain" pattern.
Further, when the conduit-like ridge portion 2 has a "plate grain" pattern, the conduit groove portion of the wood grain pattern in the pattern pattern layer 3 also has a "plate grain" pattern.

Here, "grain" and "plate grain" are concepts that follow the definitions commonly used in the wood industry.
"Sumime" means that in the plan view of a wood board, the autumn or spring lumber parts of the annual rings that make up the wood grain pattern, the conduit groove, or other characteristic patterns of the wood grain pattern are generally parallel straight lines or close to this. A form that forms a line group arrangement.
In addition, "plate grain" means that in the plan view of a wood board, the autumn or spring wood part of the annual ring, the conduit groove, or other characteristic pattern of the wood grain pattern that constitutes the wood grain pattern is a semicircle or a semi-elliptical pattern. , A form of a parallel straight line group composed of lines having one or more vertices or maximum points similar to (approximate) to a hyperbola, a parabola, a triangle, or the like in one direction, or a line group arrangement close to the parallel straight line group.

In the wood grain decorative material 10 of the present invention, even if the conduit-like ridge portion 2 is not in sync with the conduit groove portion of the wood grain pattern in the pattern layer 3, the observer of the wood grain decorative material 10 can visually recognize the wood grain decorative material 10. The conduit-like ridges 2 can be perceived as a conduit groove without any discomfort, both physically and tactilely.
On the visual side, the conduit groove pattern by the pattern layer 3 and the conduit-like ridge portion 2 are not particularly separated and are mixed and integrated, and the extension direction and the conduit density are vaguely as a conduit groove pattern. It is considered to be perceived. On the tactile surface, it is considered that the extending direction and the conduit density of only the conduit-like ridge portion 2 are similarly vaguely perceived. If there is no difference between the visual surface and the tactile surface in the extending direction and the conduit density of the conduit groove pattern that are vaguely perceived in this way, it is considered that the wood grain decorative material 10 does not feel uncomfortable.

If we think that we only vaguely recognize the extending direction and the conduit density of the conduit groove pattern as human perception, the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern layer 3 and the conduit It is understood that human perception is rather loose with respect to the misalignment with the conduit groove handle represented by the ridge portion 2. Therefore, even if the relationship between the unevenness is opposite between the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern pattern layer 3 and the conduit groove pattern represented by the conduit-like ridge portion 2 (that is, the pattern). Even if the conduit groove portion 2 (that is, the convex portion) is formed in the conduit groove handle portion represented by the conduit groove portion of the wood grain pattern in the pattern layer 3, it is considered that it is difficult to feel a sense of discomfort. Further, even if the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern pattern layer 3 and the conduit groove pattern represented by the conduit-like ridge portion 2 have different patterns, the conduit groove pattern extends. If the above conditions are met for the direction and the conduit density, it is considered that it is difficult to feel a sense of discomfort.

As described above, it is difficult to match the register between the conduit groove portion of the wood grain pattern in the pattern layer 3 and the conduit-like ridge portion 2, but in the case of the wood grain decorative material 10 of the present invention, both are registered. The need for matching is low, and when the conduit groove patterns of the two are different, registration is not necessary in the first place. Therefore, in the manufacturing process of the wood grain decorative material 10, it is possible to reduce the loss due to misregistration and the loss until the register is adjusted. Therefore, the productivity can be improved and the manufacturing cost can be reduced.

Further, as described above, according to the wood grain decorative material 10 of the present invention, the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern layer 3 and the conduit groove pattern represented by the conduit ridge portion 2. And may have different patterns. Therefore, although it is necessary to prepare the printing plate related to the pattern layer 3 for each product, it is not necessary to prepare the embossed plate for forming the conduit-shaped convex portion 2 for each product. An embossed plate having a conduit density close to that of the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern layer 3 can be selected and applied. Therefore, the man-hours and costs involved in creating the embossed plate can be reduced, which can bring about a significant cost reduction in the embossing process and also reduce the manufacturing cost.

Further, since the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern pattern layer 3 and the conduit groove pattern represented by the conduit-like ridge portion 2 may have different patterns. With respect to the item, that is, the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern layer 3, the conduit groove pattern represented by the conduit groove portion 2 can be freely used as long as the above conditions that do not cause discomfort are satisfied. Can be designed to. Therefore, the above-mentioned problems in the conventional wood grain decorative material that faithfully imitates the natural wood board as in Patent Document 1, that is, the problem that the uneven tactile sensation is low as compared with the natural wood board, and the conduit in appearance. The shape of the conduit-shaped ridge portion 2 can be designed so that these problems can be reduced with respect to the problem that the sharpness of the groove portion is inferior.

Specifically, the concave conduit groove in the natural wood board is convex in the wood grain decorative material 10 as the conduit ridge portion 2, preferably in a cross-sectional view perpendicular to the extending direction thereof. The width W of the conduit-shaped ridge portion 2 can be designed to decrease monotonically as the distance from the base material 1 increases, and the height H of the conduit-shaped ridge portion 2 can be designed in the range of 10 μm ≦ H ≦ 50 μm.
In such a wood grain decorative material 10 according to the present invention, it is possible to obtain a high uneven tactile sensation closer to that of a natural wood board and a sharp conduit groove appearance. That is, it is possible to solve the above-mentioned problems in the conventional wood grain decorative material.

Further, as described above, the conduit groove, which is concave in the natural wood board and the conventional decorative material, has a convex shape as the conduit-shaped convex portion 2 in the wood grain decorative material 10, so that the conventional decorative material has a convex shape. The wood grain decorative material 10 solves the problem that it is difficult to remove the dirt that has entered the narrow recess that reproduces the conduit groove portion. That is, in the wood grain decorative material 10, since there is no narrow concave shape imitating the conduit groove portion, the problem that it is difficult to remove the dirt in the concave portion does not occur, that is, it has easy sweepability. In the wood grain decorative material 10, the uneven tactile sensation related to the conduit groove portion is secured by the conduit-shaped ridge portion 2 having a convex shape.

As a preferable form of the wood grain decorative material 10 of the present invention, an example is shown in which the conduit-like ridge portion 2 and the conduit groove portion of the wood grain pattern in the pattern pattern layer 3 are not in sync with the pattern, and each effect based on the pattern is also described. bottom. However, the wood grain decorative material 10 of the present invention does not exclude the form in which the pattern is synchronized, that is, the conduit-like ridge portion 2 and the conduit groove portion of the wood grain pattern in the pattern layer 3 are synchronized with the pattern. It may be in the form of As described above, if the misregistration between the two is within 3 mm, it is assumed that the patterns are synchronized. The amount of misregistration here is the distance between the center line segment in the width direction of the conduit-like ridge portion 2 and the center line segment in the width direction of the wood grain pattern conduit groove portion in the pattern layer 3, and both center line segments. If is not parallel in plan view, it is the distance between the midpoints of both center lines. In a preferred embodiment, the width of the conduit-like ridge portion 2 and the width of the wood-grained conduit groove portion in the pattern layer 3 are different, so that it is not appropriate to use the contour related to each width as a reference for misregistration. ..

In the form in which the pattern is synchronized, when compared with the form in which the pattern is not synchronized, even when the observer carefully observes the wood grain decorative material 10, it is difficult to feel a sense of discomfort mainly in terms of visual aspect. It works. Further, even in the form in which the pattern is synchronized, the above-mentioned problems in the conventional wood grain pattern decorative material can be solved in the same manner as in the above description, as in the form in which the pattern is not synchronized. Further, among the above-mentioned effects related to the form in which the patterns are not synchronized, the effect of reducing the loss related to misregistration and the effect of reducing the production of embossed plates, that is, the effect of improving productivity and reducing the manufacturing cost can be obtained. For each effect except, even in the form in which the pattern is synchronized, the above-mentioned effects can be obtained in the same manner as in the form in which the pattern is not synchronized.

<Surface roughness of wood grain decorative material>
The wood grain decorative material 10 according to the present invention is to provide a wood grain decorative material having an appearance and a tactile sensation closer to that of a natural wood board, and the methods thereof have been described above. By the way, with respect to the appearance, the surface roughness of the wood grain decorative material 10 can be made as follows to make it more like a natural wood board.

In the wood grain decorative material 10, it is preferable that the surface of the conduit-like ridge portion 2 is rougher than the surface of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist. Here, the fact that the surface of A is rougher than the surface of B means that the arithmetic average roughness Ra of A is larger than the arithmetic average roughness Ra of B with respect to the arithmetic average roughness Ra defined in JIS B 0601: 2013. Say that. That is, it is preferable that the arithmetic average roughness Ra of the conduit-like ridge portion 2 is larger than the arithmetic average roughness Ra of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist. When calculating the arithmetic mean roughness Ra of the conduit-shaped ridge portion 2, the top portion (the highest portion of the height) of the conduit-shaped ridge portion 2 should be along the extending direction of the conduit-shaped ridge portion 2. You just have to measure.

In order for the arithmetic mean roughness Ra of the conduit-like ridge 2 to be larger than the arithmetic mean roughness Ra of the portion 2s where the conduit ridge does not exist on the surface of the wood grain decorative material, the conduit ridge 2 is formed. The surface of the portion corresponding to the conduit-shaped convex portion 2 of the embossed plate in the embossing process for forming the portion 2 may be provided with fine irregularities so as to increase the arithmetic mean roughness Ra. Of course, by another method, the arithmetic average roughness Ra of the conduit-like ridge portion 2 is made larger than the arithmetic average roughness Ra of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist. You may.

By satisfying the relationship of the arithmetic mean roughness Ra, the conduit-like ridge portion 2 can be a relative mat portion, and the portion 2s in which the conduit-like ridge portion does not exist can be a relative gloss portion. As a result, in normal observation light, that is, reflected light, the conduit-shaped convex portion 2 can be regarded as a relative dark portion, and the portion 2s in which the conduit-shaped convex portion does not exist can be regarded as a relative bright portion. In a natural wood board, the conduit groove portion is recognized as a dark portion because it is a concave groove in appearance, and the portion that is not a conduit groove is recognized as a bright portion because it is a relative convex portion. That is, by satisfying the relation of the arithmetic mean roughness Ra in the wood grain decorative material 10, the portion corresponding to the conduit groove in the design is darkened in the same manner as the relationship of light and dark depending on the presence or absence of the conduit groove in the natural wood board. The part other than the bright part can be set as a bright part, that is, a more natural appearance can be obtained.

However, contrary to the relationship of the arithmetic mean roughness Ra, in the wood grain decorative material 10, the surface of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist is the surface of the conduit-like ridge portion 2. The surface may be rougher than the surface.
In order to make the arithmetic average roughness Ra of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist larger than the arithmetic average roughness Ra of the conduit-like ridge portion 2, the conduit-like ridge The surface of the portion corresponding to the portion 2s in which the conduit-like convex portion of the embossed plate does not exist in the embossing process for forming the portion 2 may be provided with fine irregularities so as to increase the arithmetic mean roughness Ra. .. Of course, by another method, the arithmetic average roughness Ra of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist is made larger than the arithmetic average roughness Ra of the conduit-like ridge portion 2. You may.

By satisfying the relationship of the arithmetic mean roughness Ra, the portion 2s in which the conduit-shaped convex portion does not exist is designated as the relative mat portion (dark portion), and the conduit-shaped convex portion 2 is defined as the relative gloss portion (bright portion). can do. This is the opposite of the above-mentioned light-dark relationship depending on the presence or absence of conduit grooves in natural wood boards. However, as described above, human perception is rather loose about the misalignment between the conduit groove pattern represented by the wood grain pattern conduit groove portion in the pattern layer 3 and the conduit groove pattern represented by the conduit-like ridge portion 2. In view of this, it is strictly recognized whether the bright part is a relative convex part or a concave part if there is an appropriate unevenness tactile sensation that is not unnatural and an appropriate lightness and darkness in appearance due to the unevenness. That is, there is no sense of discomfort.

In the present embodiment, the portion 2s in which the conduit-like ridge portion, which occupies a large proportion in the plan view, does not exist is the dark portion, and the conduit-like ridge portion 2 which occupies a small proportion in the plan view is the bright portion. This has the effect of making the presence of the bright part stand out because a small proportion of the bright part exists in the dark part which occupies a large proportion in the plan view. In this way, the presence of the bright part caused by the conduit-like convex portion 2 stands out, and although the relationship is opposite to the relationship of light and dark depending on the presence or absence of the conduit groove in the natural wood board, it is visually human visually. The conduit groove portion is recognized as sharp, and the problem of visually inferior sharpness of the conduit groove portion in the conventional decorative material can be further improved.

As described above, in the wood grain decorative material 10, the surface of the portion 2s on the surface of the wood grain decorative material in which the conduit-like ridge portion does not exist and the surface of the conduit-like ridge portion 2 are both relatively rough. Even in the case of a surface, each effect depending on each form can be obtained. Whether the surface of the bowl is rough and the difference in arithmetic mean roughness Ra between the two depends mainly on the grain-patterned conduit groove pattern, but it is comprehensive in consideration of other conditions. Judgment should be made.

(Transformed form)
The form and effects of the wood grain decorative material 10 according to the present invention have been described above. In the wood grain decorative material 10 according to the present invention, as a form for realizing the above-mentioned appearance and tactile sensation, various modified forms of the layer structure can be considered in addition to the above-described layer structure according to the embodiment. Hereinafter, an example of a modified form of the layer structure of the wood grain decorative material 10 according to the present invention will be described with reference to the schematic cross-sectional view of FIG.
In each of the following examples of the modified forms, another layer may be included in addition to the layer structure illustrated. For example, a primer layer formed between the layers may be included in order to improve the adhesion between the layers. Further, at least one of the layers related to the layer structure of each of the following modified forms may be composed of a plurality of layers. For example, the base material 1 may be composed of a plurality of layers, the transparent resin layer 4 may be composed of a plurality of layers, and the pattern pattern layer 3 may be composed of a plurality of layers. good. Further, the pattern layer 3 does not have to be formed on the entire surface in the plan view of the wood grain decorative material 10.

First, for confirmation, FIG. 3A shows the layer structure of the wood grain decorative material 10 according to the above-described embodiment. In FIG. 3A, the base material 1, the pattern layer 3, and the transparent resin layer 4 are laminated in this order from the back surface side (bottom in the drawing), and the transparent resin layer 4 is embossed to form a conduit. The ridge portion 2 is formed. That is, the wood grain decorative material 10 has a conduit-like ridge portion 2 and a portion 2s in which the conduit-like ridge portion does not exist on the surface thereof. Since the transparent resin layer 4 is transparent, the pattern layer 3 can be visually recognized through the transparent resin layer 4 from the surface side of the wood grain decorative material 10. That is, the wood grain decorative material 10 has an appearance and tactile design on its surface.

Hereinafter, the modified form of the layer structure of the wood grain decorative material 10 will be described with reference to FIGS. 3 (b) to 3 (h).
FIG. 3B shows a form in which another pattern layer 3 is laminated on the surface of the transparent resin layer 4 in the portion 2s where the conduit-like convex portion does not exist in FIG. 3A. The layer structure in the portion where the other pattern layer 3 is laminated is such that the base material 1, the pattern layer 3, the transparent resin layer 4, and the pattern layer 3 are laminated in this order from the back surface side. In the upper pattern layer 3 in such a form, for example, the pattern layer 3 is laminated on the entire surface of the transparent resin layer 4, and then the pattern layer 3 formed on the conduit-like ridge portion 2 is wiped. It can be formed by removing it by a method such as. Also in the form according to FIG. 3 (b), the same action and effect as the wood grain decorative material 10 in the form according to FIG. 3 (a) can be obtained.

3 (c) shows that in FIG. 3 (b), the pattern layer 3 between the base material 1 and the transparent resin layer 4 does not exist, and the pattern layer 3 has the same shape as that of FIG. 3 (b). It is a form formed only on a part of the surface of the transparent resin layer 4. The layer structure is such that the base material 1, the transparent resin layer 4, and the pattern layer 3 are laminated in this order from the back surface side. Also in the form according to FIG. 3 (c), the same action and effect as the wood grain decorative material 10 in the form according to FIG. 3 (a) can be obtained.

The transparent resin layer 4 is not an essential structure in the wood grain decorative material 10 according to the present invention. For example, as shown in FIG. 3D, the pattern layer 3 may be formed on the surface side of the base material 1 and then embossed. In this form, the pattern layer 3 is also formed on the conduit-shaped ridge portion 2. Also in the form according to FIG. 3 (d), the same action and effect as the wood grain decorative material 10 in the form according to FIG. 3 (a) can be obtained.
As another example, as shown in FIG. 3 (e), after the base material 1 is embossed, there is no conduit-like ridge portion as in FIGS. 3 (b) and 3 (c). The pattern layer 3 may be laminated only on the portion 2s. Also in the form according to FIG. 3 (e), the same action and effect as the wood grain decorative material 10 in the form according to FIG. 3 (a) can be obtained.

In the wood grain decorative material 10 according to the present invention, the transparent resin layer 4 may also serve as the base material 1. That is, in such a form, the base material 1 is made of a transparent resin. In this form, the transparent resin layer 4 can be considered to be the base material 1, and the transparent resin layer 4 can be read as the base material 1 or the base material 1 can be read as the transparent resin layer 4.
For example, as shown in FIG. 3 (f), the conduit-like ridge portion 2 is formed on the transparent resin layer 4 that also serves as the base material 1, and the pattern layer 3 is laminated and formed on the back surface side of the transparent resin layer 4. It may be in the same form. Also in this form, the pattern layer 3 can be visually recognized through the transparent resin layer 4 from the surface side of the wood grain decorative material 10. In this form, the transparent resin layer 4 is solely responsible for the mechanical strength of the wood grain decorative material 10. Even in the form according to FIG. 3 (f), the same action and effect as the wood grain decorative material 10 in the form according to FIG. 3 (a) can be obtained in spite of the simple layer structure.

Further, as shown in FIG. 3 (g), in FIG. 3 (f), another pattern layer 3 may be laminated on the surface of the transparent resin layer 4 in the portion 2s where the conduit-like convex portion does not exist. ..
Further, as shown in FIG. 3 (h), in FIG. 3 (g), the pattern layer 3 laminated on the back surface side of the transparent resin layer 4 also serving as the base material 1 may not exist.
Regardless of the form shown in FIG. 3 (g) or FIG. 3 (h), the same effect as that of the wood grain decorative material 10 according to FIG. 3 (a) can be obtained.
In each of the laminated form examples of FIGS. 3 (a) to 3 (e), a pattern layer may be further laminated on the back surface side. Even in these cases, the same effect as that of the wood grain decorative material 10 according to FIG. 3A can be obtained.

[Manufacturing method of wood grain decorative material]
Next, a method for producing the wood grain decorative material 10 according to the present invention will be described with reference to the schematic cross-sectional view of FIG. As described above, since the laminated form of the wood grain decorative material 10 according to the present invention varies, as an example, the wood grain decorative material 10 according to the embodiment, that is, the wood grain having the layer structure according to the schematic cross-sectional view of FIG. 3A. A method for producing the decorative material 10 will be described.
First, the base material 1 is prepared (FIG. 4 (a)). In the present invention, from the viewpoint of production efficiency and handling in the subsequent steps, the base material 1 to be prepared is usually a wound sheet on the web in many cases.

Next, the pattern layer 3 is formed on the surface side of the base material 1 (FIG. 4 (b)). The pattern layer 3 is usually formed by printing, preferably by gravure printing, offset printing, inkjet printing, and more preferably by gravure printing. Of course, other forming methods may be used.
Next, the transparent resin layer 4 is formed on the pattern layer 3 formed on the surface side of the base material 1 (FIG. 4 (c)). As an example of the method of laminating the transparent resin layer 4, there is a method of laminating a separately prepared transparent resin sheet on the three side of the pattern layer 3 of the base material 1 on which the pattern layer 3 is laminated. Another method is a method of coating and forming a transparent resin on the surface of the pattern layer 3 of the base material 1 on which the pattern layer 3 is laminated, or printing.

Next, the sheet material in which the base material 1, the pattern layer 3, and the transparent resin layer 4 are laminated in this order is embossed to deform and form the conduit-like ridges 2 on the transparent resin layer 4 (FIG. 4 (FIG. 4). d)). In FIG. 4D, the embossed plate related to the embossing process is shown by EM. As a result, the wood grain decorative material 10 according to the present invention can be obtained (FIG. 4 (e)).
In addition, in FIGS. 3A and 4E showing schematic cross-sectional views according to the embodiment, only the transparent resin layer 4 is deformed among the layers constituting the wood grain decorative material 10, and the conduit-like ridge portion is formed. Although 2 is formed, the pattern layer 3 and the base material 1 may be deformed in addition to the transparent resin layer 4.

As described above, the laminated form of the wood grain decorative material 10 according to the present invention is various as illustrated in FIGS. 3 (a) to 3 (h), and the manufacturing method including the process sequence is different depending on each laminated form. come. However, in each manufacturing method according to each form of the wood grain decorative material 10 according to the present invention, the conduit-shaped ridge portion 2 is formed by embossing. That is, in each form of the wood grain decorative material 10 according to the present invention, the conduit-shaped ridge portion 2 is embossed.

The conduit-shaped ridge portion 2 is embossed. In the case of embossing, the width W of the conduit-shaped convex portion 2 may be shaped to decrease monotonically as the distance from the base material 1 increases, or the height H may be shaped to be in the range of 10 μm ≦ H ≦ 50 μm. It is easy to do. Further, since the conduit-shaped ridge portion 2 is not formed by laminating by printing or the like, so-called blocking that may occur at the time of superposition after printing does not occur.

[Building materials]
Next, the building material 20 according to the present invention will be described. As outlined in the cross-sectional perspective view of FIG. 5, the building material 20 according to the present invention is formed by attaching the wood grain decorative material 10 according to the present invention to the adherend 5. In other words, the building material 20 is formed by attaching the wood grain decorative material 10 according to the present invention to the adherend 5.
Here, the adherend 5 is the object to which the wood grain decorative material 10 according to the present invention is attached, and examples thereof include the following.
(1) Wall materials, ceiling materials, floor materials, etc. of buildings such as houses, offices, and shops.
(2) Interior materials for automobiles, railroad vehicles, ships, aircraft, etc.
Of course, there is another layer such as a functional board, a functional sheet, a backing material, an undercoat material, a seal or an undercoat coating film between the wall material, the ceiling material, the interior material, etc. and the wood grain decorative material 10. You may be. In such a case, it is considered that the adherend 5 includes the functional board, the functional sheet, and the like to which the wood grain decorative material 10 is attached.
Even in such a building material 20, the same effects as those of the wood grain decorative material 10 can be obtained.

Although the wood grain decorative material, the method for producing the same, and the building covering material according to the present invention have been described above, the present invention is not limited to the above embodiment. The above embodiment is an example, and in any case, the present invention has substantially the same configuration as the technical idea described in the claims of the present invention and exhibits the same effect and effect. It is included in the technical scope of the invention.

The wood grain decorative material according to the present invention has the following three problems in a conventional decorative material having a wood grain pattern including a conduit groove portion, that is, a weak texture of unevenness, a poor sharpness of the conduit groove portion in appearance, and It solves all of the inferior points of easy sweepability. Therefore, the decorative material (wood grain decorative material) having a wood grain pattern including the conduit groove portion according to the present invention has an appearance and feel closer to that of a natural wood board, that is, an excellent design property. Such wood grain decorative materials are particularly used as wall covering materials used for the walls of buildings such as buildings and houses, floor decorative materials used for floor surfaces, and decorative materials for decorating the surface of furniture and the like. Can be suitably used as a high-grade variety of.
Similarly, the building material according to the present invention can be suitably used as a wall surface or a floor surface of a building.

1 Base material 2 Conduit-shaped ridges 2s The part of the surface of the wood-grained decorative material where the conduit-shaped ridges do not exist 3 Pattern layer 4 Transparent resin layer 5 Adhesive body 10 Wood-grained decorative material 20 Building material H Height of the conduit ridge W Width of the conduit ridge

Claims (9)

A wood grain decorative material having a base material, a pattern layer, and conduit-like ridges.
The wood grain decorative material contains the conduit-like ridges in at least a part on the surface thereof.
The pattern layer has a wood grain pattern including a conduit groove portion, and has a wood grain pattern.
The conduit-like ridge portion is a wood grain decorative material corresponding to the conduit groove portion of the wood grain pattern. The first aspect of the present invention, wherein the conduit-shaped ridge portion monotonically decreases as the distance from the base material increases, where W is the width of the conduit-shaped ridge portion in a cross-sectional view perpendicular to the extending direction. Wood grain decorative material. The wood grain decorative material according to claim 1 or 2, wherein the height H of the conduit-like ridge portion is 10 μm ≦ H ≦ 50 μm. The wood grain according to any one of claims 1 to 3, wherein the surface of the conduit-shaped convex portion is rougher than the surface of the portion of the surface of the wood grain decorative material in which the conduit-shaped convex portion does not exist. Cosmetic material. The wood grain according to any one of claims 1 to 3, wherein the surface of the portion of the surface of the wood grain decorative material in which the conduit-shaped convex portion does not exist is a rougher surface than the surface of the conduit-shaped convex portion. Cosmetic material. The wood grain decorative material according to any one of claims 1 to 5, wherein the conduit-like ridge portion is not pattern-synchronized with the conduit groove portion of the wood grain pattern. The wood grain decorative material according to any one of claims 1 to 5, wherein the conduit-like ridge portion has a pattern synchronized with the conduit groove portion of the wood grain pattern. The wood grain decorative material according to any one of claims 1 to 7, wherein the conduit-shaped ridge portion is embossed. A building material obtained by attaching the wood grain decorative material according to any one of claims 1 to 8 to an adherend.

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